OUI Lookup
001b91
EFKON AG
Manufacturer Information
- OUI Prefix
- 001b91
- Manufacturer
- EFKON AG
- Address
- Dietrich-Keller-Strasse 20 8074 Raaba AT
- Last updated
- 6/11/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 001B91
The OUI prefix 001B91 is assigned to EFKON AG, based in Dietrich-Keller-Strasse 20 8074 Raaba AT . It is a MA-L type block of 24 bits (first three octets). Allows up to 16 million unique MAC addresses. If you find this prefix on your network, the devices belong to EFKON AG.